.content{
    width: 355px;
    height: 430px;
    border: 1px solid #979797;
    background: #efedf0;
    border-radius: 5px;
    margin-left: 400px;
    margin-top: 100px;
}
.name{
    color: #979797;
    margin: 20px 0 20px 0;
    text-align: center;
}
#operation_box{
    width: 270px;
    height: 49px;
    margin:0 40px;
    border-radius: 4px;
    text-align:right;
}
.button{
    width: 58px;
    height: 41px;
    border: 1px solid #d3d3d3;
    margin-top: 13px;
    margin-left: 13px;
    border-radius: 4px;
}
#enter_button{
    margin-left: 20px;
}
body{
    background:#5c4f49;
    margin: 0;
}